i create channel 2 in 3dsmax but when i import fbx in untiy3d and render uv not same in 3dsmax
i not check (Generate lightingmap uv) in fbx
now how i can use uv channel 2 i created in 3dsmax to bake lightingmap in unity3d ?
some one know ?
You need to make sure that the UV’s do not overlap and that they are in the 0-1 UV space - further details can be found on this thread:
no no you mistake me
i mean i create uv2 in 3dsmax and when i import fbx in untiy3d . i want use this uv2 to bake lingtingmap in there
http://forum.unity3d.com/threads/160622-Shader-with-custum-lightmap-that-use-uv2
I think that would help you more 
i mean i want bake map in unity3d not in 3dsmax
so i will use bake lightingmap in unity , but i use uv2 in 3dsmax
if i use shader support lighting map i need bake lightingmap in 3dsmax . i don’t wanna this
you know i mean ?
I’d assume if you have an object with multiple uv tags and the first is named “uv” and the 2nd “uv2” unity should just use those as normal… atleast, that’s how it works for me from Cinema4D. Just be sure that “Generate Lightmap UVs” is unticked in the import settings!
yes i am not check in “Generate Lightmap UVs”
uv still not same in 3dsmax
i think this is " resolution " and " padding" seting in bake lightingmap in unity3d
but i don’t know how uv can same
I was just researching this myself. What you want to do is bake a lightmap in 3Ds max to a Uv2. First, however, you have to generate a second uv that will be used for the lightmap texture. So simply google “bake lightmap to uv2 in 3ds max” in google. Here is a neat video : http://www.youtube.com/watch?v=pUwFteZBjw8. The final step would be to use the lightmapped shader in unity.
no i don’t want bake a lightmap in 3Ds max
i want bake in unity use uv2 in 3dsmax
but when i import fbx in unity uv2 not same in 3dsmax
i think this error by " resolution " and " padding" seting in bake lightingmap in unity3d
but i don’t know to fix it